HVAC Forum

1,663 topics in this forum

1. 8 inch vent in 2 x 12 rim joist?

   By Michael Brown, May 30, 2022
   • 7 replies
   • 1.4k views
   • 
   • Michael Brown
   • May 31, 2022

2. Airco AGS 120 and 80

   By Island 1, May 5, 2022
   • 1 reply
   • 825 views
   • 
   • Jim Katen
   • May 6, 2022

3. heat pump short cycle

   By John Dirks Jr, April 21, 2022
   • 7 replies
   • 1.8k views
   • 
   • John Dirks Jr
   • May 1, 2022

4. Daikin mini split heat issue

   By Ntdk1212, April 6, 2022
   • 0 replies
   • 857 views
   • 
   • Ntdk1212
   • April 6, 2022

5. 1940's chimney with "extra connection"

   By ejager, March 20, 2022
   • 1 reply
   • 911 views
   • 
   • Jim Katen
   • March 21, 2022

6. Kewanee Boiler Age

   By Mike Lamb, March 7, 2022
   • 2 replies
   • 1.7k views
   • 
   • Jim Katen
   • March 9, 2022

7. Odor from AC and Heating vents

   By Mark22, February 4, 2022
   • 12 replies
   • 1.3k views
   • 
   • Bill Kibbel
   • February 24, 2022

8. Gas fire 4" Type-B vent replacement

   By Tanquen, December 11, 2021
   • 4 replies
   • 2.2k views
   • 
   • Tanquen
   • December 13, 2021

9. Maintaining a vintage 1950s-1960s Holland forced air gas furnace?

   By Ozzuneoj, October 10, 2021
   • 10 replies
   • 5.7k views
   • 
   • Ozzuneoj
   • October 18, 2021

10. Damaged flame sensor on furnace

    By Monty, October 15, 2021
    • 1 reply
    • 1.2k views
    • 
    • Jim Katen
    • October 16, 2021

11. ID stuff on boiler pipe

    By Mike Lamb, September 20, 2021
    • 0 replies
    • 686 views
    • 
    • Mike Lamb
    • September 20, 2021

12. Energy Recovery Air Purifier

    By Yevgen, September 17, 2021   

    • erv
    • air purifier
    • 1 reply
    • 915 views
    • 
    • Bill Kibbel
    • September 17, 2021

13. Hydronic with Fan Coil?

    By Jim Katen, September 2, 2021
    • 4 replies
    • 1k views
    • 
    • Rob Amaral
    • September 6, 2021

14. 1986 High Efficiency Furnace?

    By CNewhouse, August 18, 2021
    • 3 replies
    • 1.3k views
    • 
    • Mike Lamb
    • August 21, 2021

15. Mini split lines frosting up 1 2 3

    By John Dirks Jr, June 8, 2019
    • 72 replies
    • 28.7k views
    • 
    • Trent Tarter
    • August 11, 2021

16. Gas appliance in garage closet

    By Mike Lamb, July 21, 2021
    • 1 reply
    • 829 views
    • 
    • Bill Kibbel
    • July 22, 2021

17. Fiberglass Ductboard replace or no?

    By jbean, July 14, 2021
    • 3 replies
    • 1.7k views
    • 
    • jbean
    • July 15, 2021

18. Daikin WLAN adapter acting in funny way

    By zillah, July 10, 2021
    • 2 replies
    • 654 views
    • 
    • Jim Katen
    • July 11, 2021

19. Air temp in crawl space seems way to cold in the summer and way too hot in the winter

    By Sparky H, July 4, 2021   

    • zone hvac
    • bypass damper
    • (and 1 more)

      Tagged with:

      • zone hvac
      • bypass damper
      • cold crawl
    • 2 replies
    • 814 views
    • 
    • Howard L. Rennie
    • July 7, 2021

20. Vent joints no longer required to be sealed

    By Mike Reno, May 16, 2021   

    • sealing
    • vents
    • (and 3 more)

      Tagged with:

      • sealing
      • vents
      • exhaust
      • furnace
      • hvac
    • 1 reply
    • 2.1k views
    • 
    • Jim Katen
    • May 17, 2021

21. Steam boiler dirty sight glass

    By Mike Lamb, March 26, 2021
    • 1 reply
    • 1.3k views
    • 
    • Bill Kibbel
    • March 27, 2021

22. Quick Heat Pump Help Please

    By Jerry Simon, February 5, 2021
    • 14 replies
    • 1.8k views
    • 
    • acnorthport
    • March 25, 2021

23. 15 year old Mini split systems. If replacing the CU, what about the indoor unit?

    By MPdesign, December 2, 2020
    • 9 replies
    • 1.9k views
    • 
    • Les
    • March 21, 2021

24. Gas water heater/oil fired furnace sharing flue 1 2 3

    By Bill Kibbel, January 14, 2008
    • 52 replies
    • 35.9k views
    • 
    • Chad Fabry
    • March 16, 2021

25. Aqua Therm heating system 1 2 3

    By Robert Jones, February 1, 2009
    • 54 replies
    • 69.7k views
    • 
    • hausdok
    • February 20, 2021